1、The costs of life period is an important theory in modern management of equipment.
壽命周期費用理論是現(xiàn)代設備管理的重要理論。

2、Then, the analysis step about the costs of life period is presented.
然后介紹了壽命周期費用分析步驟。

3、The product life period is a central subject in studying product management.
產(chǎn)品性命周遲期非產(chǎn)品運營管理研討中的中央課題。

life period翻譯